A rechargeable device most often made of lead plates covered in an electrolyte and protected by a plastic shell which supplies consistent electrical energy to a motor vehicle. Often referred to as an SLI battery (starting, lighting, ignition). Powers starter motor, lights, and ignition systems of a ...

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13
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1answer
273 views

Replace car batteries with capacitors?

I recently watched this video on YouTube which basically shows the guy replacing a larger capacitors with some smaller capacitors which he had bought. The larger capacitors were actually in place of a ...
4
votes
1answer
26 views

2005 Civic - Strange electrical issues

My wife's 05 civic started to have some strange electrical issues. I'm not sure even where to start troubleshooting. She originally complained that both headlights died simultaneously. I assumed ...
2
votes
1answer
53 views

Amplifier is causing battery drain

Okay I'm driving a 1998 Honda Civic EX and I have an audio system in my car that is about 7-8 years old now. I had done some work on one of the terminals on the subwoofers, and melted plastic in ...
17
votes
9answers
46k views

Battery drains by itself when vehicle is parked (parasitic draw)

A 1998 Jeep Grand Cherokee has gone through 3 batteries in the last 3 months. While they have all been replaced by warranties, it'd be nice to get the problem solved permanently. I've tested the ...
5
votes
2answers
117 views

Multimeter to check car battery current

short background, my car battery will often be too flat to start the car if I don't use it for about 48 hours. Worst it happened the other day after leaving it at airport car park for 4 days and come ...
6
votes
4answers
692 views

Considerations for soldering car battery wires?

I've had several problems with my car's wiring oxidizing at the exposed ends near and under post clamp and causing electrical connectivity problems. The braided wire is a pain to brush clean and I ...
4
votes
1answer
81 views

Honda civic 2003 dead battery from cold

My Honda Civic died after the temperature dropped lower than -30°C, and will only start now when I boost it. The previous owner told me about this, and he said he replaced the battery. But now, it's ...
4
votes
2answers
136 views

How much current should my car draw with the ignition on?

With the ignition fully off, my current draw is pretty much zero, but with the ignition on (to be clear - engine not spinning, starter motor not engaged) it increases to 2.5 amps (at about 11.5v, ...
7
votes
3answers
211 views

Portable jumpstart kits: why aren't regular car batteries this small?

I was looking at the details of this jumpstart product: It claims to be 2 lbs and 14.2 x 12 x 3.5 inches, which I think is for the outer black canvas case, so I would guess the actual device is ...
1
vote
2answers
53 views

Hyundai XG350 - Positive or Negative Ground Battery?

I have a 2002 Hyundai XG350, and all of the wires from the battery run out of sight before connecting to the chassis. There is only one wire coming off of the negative, and a number of different ...
2
votes
1answer
52 views

Are two-wheeler battery types interchangable [duplicate]

I have a Honda Activa 2007 model. The battery fitted in it is electrolyte topup battery which requires distilled water to be filled up from time to time. My question is can a maintenance free battery ...
3
votes
2answers
43 views

What would cause my truck to shut off during me cranking it?

My 1999 Mercury Mountaineer shut off during mid crank. It acted as if it wanted to crank then it shut off. Everything shut down. Outside and inside lights shut off. When I tried to crank it, it didn't ...
1
vote
3answers
85 views

Car doesn't start, cranked at first but now it doesn't

I have a Honda Civic 1995 that suddenly didn't start after a day or two of not being used. I managed to start it with starter cables and drive but when I turned it off I did not start again. I didn't ...
4
votes
4answers
105 views

Does draining a battery typically leave it in a state that it won't take a charge?

My son borrowed a car and the battery seemed fine, car started fine every time. However it died after my son left some overhead lights on in the car overnight. We jumped it, and he drove about 20 ...
6
votes
9answers
3k views

2 Volts on Car Battery

My car battery has gone completely flat after leaving my car parked up for about a month. Tried turning over the car today, and none of the lights on the dash light up. Ran a multimeter across the ...
3
votes
1answer
48 views

Calculate current drain from the battery in a drive

Control module voltage is one of the OBD PID. It signifies the car battery voltage. Is there any way to calculate how much current is drawn in a drive (say 7 km from my office to home). The voltage ...
3
votes
0answers
45 views

Battery Draw while car is off at 3.24

I have a 2007 Saab 95 wagon... For about 6 months at random about once a month my car has been dead. After calling AAA and they told me there is a draw from the battery at apx 3.24 which is should be ...
3
votes
1answer
114 views

Switched battery terminals when installing, 2008 Chevy Cobalt

2008 Chevy Cobalt LS I was installing a charged battery and accidentally put the positive wire on the negative terminal and then as soon as I touched the negative wire to the positive terminal I ...
6
votes
3answers
439 views

Alternator draining battery

My alternator has been draining my battery in my Datsun 240z since I swapped the engine (VQ35). It takes around 4 days to drain the battery to the point I can't start it. It charges it fine when the ...
4
votes
2answers
9k views

Mustang charging system warning light on, but battery and alternator both passed testing?

I have a Mustang that the battery light stays on. I changed the battery and the alternator was checked by Autozone, they said it was good. I need help
8
votes
1answer
101 views

Disconnected wires near battery in BMW e46

I noticed a disconnected wire dangling next to the battery in the trunk of my 2005 BMW 330ci. It was actually a red and blue wire that veered off from the thick red one in the middle of the image. ...
4
votes
1answer
81 views

Battery light flashing after alternator install on 2004 Ford Escape

I just put new alternator on my 2004 Ford Escape, and now my battery light keeps flashing on and off, and it will sometimes stay on. The battery has been checked and is charging 100 % . The alternator ...
5
votes
2answers
217 views

Motorcycle won't turn over immediately after a pit stop

Motorcycle: 1980 Honda CB900 Custom. After refilling the battery with distilled water, getting it charged and letting the motorcycle sit for a few days... I then went for a ride yesterday. The ...
8
votes
2answers
99 views

Old starter clicked, wont turn over engine. New starter wont even click - no noise at all

My old starter would click, but not turn the engine over. I got a brand new starter and installed it. The only two wires connected to the starter are completely different and can only be fit in the ...
4
votes
1answer
33k views

Charging battery after a jump start

A friend accidentally let the battery in his car run out by leaving the car lights on. He managed to get it going again with a jump start, but he wasn't sure how long he'd have to drive to ensure that ...
5
votes
1answer
54 views

2002 golf dead battery - Was able to jump - Bad alternator or Battery

I have a 2002 Golf. I put the car on the drive on Friday night and tried to use it on Wednesday and it was dead. No lights, no display nothing. I came home and jump started and it ran fine. No stalls ...
6
votes
1answer
67 views

Help with Strange Intermittent yet predictable parasitic battery drain?

I'm having an issue where while testing circuits for the offending drain, I will see NO drain for about 30 seconds and then a 6-9 amp drain for about 10; rinse and repeat. Anybody have an idea what ...
10
votes
1answer
85 views

Do any car batteries come dry with the electrolyte in a seperate container?

Small batteries for Motorcycles and Lawn Tractors are typically sold with the electrolyte in a separate bottle and must be added to the battery at home before installing it. I've never seen a "dry" ...
10
votes
2answers
1k views

Can I safely upgrade to an AGM battery?

AGM batteries are capable of being charged at a faster rate, and may draw additional amperage from the alternator if it is not regulated. Many cars that come with AGM batteries have special charge ...
3
votes
3answers
101 views

How can you use the headlights to tell the quality of your battery?

I understand that all headlights do dim briefly when you turn the engine on and that this is normal. I also believe that the headlights will dim more if the car battery is in poor condition. I hope ...
6
votes
1answer
232 views

Starter solenoid clicking continuously

Any advice on this would be greatly appreciated. My car would not start yesterday. When the ignition was turned, all that could be heard was a continuous clicking which then slowed after a while, ...
4
votes
2answers
155 views

Can I use any portable powerbank to jump start a car

Say I have some ordinary portable powerbanks I use for my smartphone, I wonder if all of them are able to jump start a car with flat battery as long as I have a correct connector (e.g. clamp). Or ...
7
votes
1answer
52 views

How can I dispose of the waste products I get from working on my car more effectively?

I have some real challenges disposing of various fluids and consumable objects from working on vehicles at home in my small workshop. Some of the more common things that I want to be able to dispose ...
4
votes
2answers
4k views

What is the difference between a normal battery and a maintenance free battery in a 2 wheeler segment

What is the difference between a normal battery and maintenance free battery. Is a maintenance free battery really free of maintenance or just it requires less no of charge cycles. I currently own a ...
4
votes
2answers
287 views

What battery should I buy for my vehicle?

My girlfriend has a Nissan Versa 2014 (although this question still applies for any other car), and I need to buy a battery for it. I went to both Walmart and Advance Auto parts and there are lots of ...
4
votes
2answers
55 views

Why does my car die completely (after a battery recharge)?

Recently, the keys in my car were left in the ignition in the 'on' position and my battery was drained. I posted a question about replacing v. recharging (24930). I removed the battery from the car ...
4
votes
2answers
227 views

Car battery won't charge above 50%

I had a problem starting my car after not driving it for two weeks. After charging the battery with a CTEK trickle charger via the cigarette lighter socket, the car started fine. I had my car battery ...
7
votes
4answers
742 views

Corrosion on battery, won't start, making clicking noise, won't charge

I'm trying to charge the battery on my 2002 Celica. Here is some background: Battery is a bit old, around 3 years or so. Corrosion has been building on the battery to the point that it almost ...
7
votes
8answers
4k views

Why use a car battery charger?

What's the need for car battery chargers that I often see on display in auto parts shops? I mean a battery is sold charged (and if it discharges too much it just dies and can't be restored) and every ...
4
votes
4answers
8k views

Jumping car with too many amps?

Is it bad to jump your car with too many amps (i.e., with a 1000 amp jumper vs. a 400 amp jumper)? Or does the car regulate how many amps it will take? EDIT: I was told 400 amps is enough for most ...
6
votes
2answers
82 views

Car battery appears good but car won't start

My 2005 Nissan won't start today. Battery is relatively new(about one year old) and I can turn the lights on, front headlights, and it appears fine. However, when I tried to start the car by turning ...
3
votes
2answers
56 views

Need help with my 2004 Volvo S80

I am having a problem with my 2004 Volvo S80 ... In the mornings when I go to start my car, I get a message skid service required ... Then after I mess with it a little bit the message goes away ... I ...
6
votes
5answers
257 views

Charging circuit

I have a motorhome and tow my car behind. Since I have to leave the car in accessory mode so the steering wheel is unlocked, the battery doesn't last a long time. I want to run a DS line from the ...
7
votes
1answer
96 views

Do car batteries degrade when left charged, boxed and unconnected for long periods, e.g. in a shop?

I was discussing where to buy car batteries with a friend who is a professional driver and who has briefly worked as a mechanic. He suggested buying from one particular shop for several reasons, one ...
4
votes
4answers
61 views

Replace or recharge a battery after is has been drained?

The keys in my car were left in the on position for about 12 hours (and maybe the interior light left on) and the battery is drained. Is there any way I tell if I should replace the existing one or ...
6
votes
1answer
60 views

Trouble starting car, cold weather. MB A140 W168

So, I have a Mercedes-Benz, A140 W168. I moved to Finland about 18ish months ago which is when we bought the car 2nd hand. Last winter temperatures only went down to around -15C (5F) degrees, and ...
12
votes
5answers
3k views

Should negative trickle charger clips be attached to the battery negative terminal, or ground?

I'm trickle-charging a car using direct connections to the battery. I thought this couldn't be simpler: ventilate, unhook the battery, connect the positive first, then the negative, then turn on the ...
4
votes
3answers
21k views

Factory panic alarm going off after changing battery [97 Toyota Camry]

We just changed the battery in our 1997 Toyota Camry now as soon as we connect the battery the panic alarm goes off and all the doors lock. How do we stop this / turn it off. ///note: the battery in ...
8
votes
6answers
23k views

2004 Ford Escape battery light comes on intermittently - what likely cause(s) are there?

I have a 2004 Ford Escape Limited on which the battery light has been coming on randomly for varying amounts of time while the vehicle is in active operation. I have checked the battery cables and ...
5
votes
1answer
51 views

ECM Fuse Blown what to test next

Recently I was on the highway and suddenly my car broke down and it was cranking and all but not starting so I knew some fuse has blown. I removed the indicator fuse and used it for fuse which gave ...